

    \filetitle{dot}{Gross rate of growth pseudofunction}{modellang/dot}

	\paragraph{Syntax}\label{syntax}

\begin{verbatim}
dot(Expr)
dot(Expr,K)
\end{verbatim}

\paragraph{Description}\label{description}

If the input argument \texttt{k} is not specified, this pseudofunction
expands to

\begin{verbatim}
((Expr)/(Expr{-1}))
\end{verbatim}

If the input argument \texttt{k} is specified, it expands to

\begin{verbatim}
((Expr)/(Expr{k}))
\end{verbatim}

The two derived expressions, \texttt{Expr\{-1\}} and \texttt{Expr\{k\}},
are based on \texttt{Expr}, and have all its time subscripts shifted by
--1 or by \texttt{k} periods, respectively.

\paragraph{Example}\label{example}

The following two lines

\begin{verbatim}
dot(Z)
dot(X+Y,-2)
\end{verbatim}

will expand to

\begin{verbatim}
((Z)/(Z{-1}))
((X+Y)/(X{-2}+Y{-2}))
\end{verbatim}


